Spray coating equipment in open atmosphere by assisted thermal heating

摘要

This article presents the implementation of an automatic spray equipment for the creation of multilayer materials, which allow to growth materials for manufacturing Grätzel solar cells devices; uses of spray coating open atmosphere techniques causes different changes in physical and chemical thin film technology (TFT) properties mainly in morphology, mechanical, compositional, magnetic and optical ones, improving at the same time nanoparticle adhesion phenomena. Through the Conceive-Design-Implement-Operate or CDIO method, a system was designed to control spray type, movement, cycles, surrounding conditions and temperature sensing, and this device was developed to apply the most efficient coating technique when performing production TFT processes. Due to the development of this device were obtained significant results in the fabrication of solar cells using graphene-like material, TiO2, molecules for sensitizing semiconducting materials on substrate slides glass with accuracy thickness in the order of nm. Above materials were used to performed photovoltaic Grätzel cell devices and was found a maximum electrical potential between 120 mV and 520 mV, in a 7.0 cm2 on standard illumination conditions, these results depend of fabrication process and molecules used on.